Question

A: Esterification ive: To make three common esters and to note their characteristic odour and to draw structural diagrams representing each reactions. Set up a 400 mL beaker and apparatus like the example on the front lab bench. Fill the beaker approximately 2/3 full of water to serve as a hot bath. For each of the carboxylic acid- alcohol pair of chemicals below, complete the following Note that the carboxylic acid may be a crystal or a solution. 1. Carefully smell the odour of the carboxylic acid and the alcohol. (Use caution whenever smelling in the lab. Use the wafting method.) Make observations. 2. Place a scoop (about the size of a pea) of carboxylic acid crystals or 2 mL (40 drops) of liquid carboxylic acid into a test tube. 3. Add 2 mL (40 drops) of the alcohol. 4. Cautiously add 10 drops of H2SO4(aq) as a catalyst for the esterification reaction. 5. Make sure that the long glass tube is not plugged, then heat the water bath until the mixture starts to bubble slowly. Continue moderate boiling for 5 minutes. Note that the glass tubing should be rinsed with distilled water between each reaction. Allow the mixture to cool to room temperature and check the odour of the ester formed. Make observationm 6. salicylic acid and methanol ethanoic acid and ethanol ethanoic acid and 3-methylbutan-1-ol ester - wintergreen odour -fruity odour banana odour

Answer 1